/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.eclipse.andmore.android.certmanager.command;

import java.io.File;
import java.util.Map;

import org.eclipse.andmore.android.certmanager.core.KeyStoreUtils;
import org.eclipse.andmore.android.certmanager.event.KeyStoreModelEventManager;
import org.eclipse.andmore.android.certmanager.event.KeyStoreModelEvent.EventType;
import org.eclipse.andmore.android.certmanager.exception.InvalidPasswordException;
import org.eclipse.andmore.android.certmanager.exception.KeyStoreManagerException;
import org.eclipse.andmore.android.certmanager.ui.dialogs.importks.ConvertKeyStoreTypeDialog;
import org.eclipse.andmore.android.certmanager.ui.model.IKeyStore;
import org.eclipse.andmore.android.certmanager.ui.model.ITreeNode;
import org.eclipse.andmore.android.common.utilities.EclipseUtils;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.PlatformUI;

/**
 * Handler to execute the change keystore type wizard.
 * */
public class ChangeKeyStoreTypeHandler extends AbstractHandler2 {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ITreeNode node = getSelection().get(0);

		if (node instanceof IKeyStore) {
			ConvertKeyStoreTypeDialog dialog = new ConvertKeyStoreTypeDialog(PlatformUI.getWorkbench()
					.getModalDialogShellProvider().getShell(), (IKeyStore) node);
			int diagStatus = dialog.open();
			if (diagStatus == Window.OK) {
				IKeyStore keyStore = dialog.getKeyStore();
				String newType = dialog.getNewType();
				Map<String, String> aliases = dialog.getAliases();
				String password = dialog.getKeystorePassword();

				File keyStoreFile = keyStore.getFile();
				try {
					if (password != null) {
						// user entered some password
						KeyStoreUtils.changeKeyStoreType(keyStoreFile, password.toCharArray(), keyStore.getType(),
								newType, aliases);
						keyStore.setType(newType);
						keyStore.forceReload(password.toCharArray(), false);
						KeyStoreModelEventManager.getInstance().fireEvent((ITreeNode) keyStore, EventType.UPDATE);

					}
				} catch (KeyStoreManagerException e) {
					EclipseUtils.showErrorDialog(e);
				} catch (InvalidPasswordException e) {
					EclipseUtils.showErrorDialog(e);
				}
			}
		}

		return null;
	}
}
